Holcodiscus
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Holcodiscus is an extinct ammonite genus placed in the family Holcodiscidae. Species in this genus were fast-moving nektonic carnivores. The type species of the genus is Ammonites caillaudianus.
Holcodiscidae Holcodiscus fallax
Holcodiscus mediocostatus Tzankov, 1935, Barremian, Razgrad, Cr1 1716 (Coll. V. Tzankov) at the Sofia University Museum of Paleontology and Historical Geology
Holcodiscidae
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Holcodiscidae is an ammonite family placed in the superfamily Desmoceratoidea.
Holcodiscus
…Holcodiscus is an extinct ammonite genus placed in the family Holcodiscidae. Species in this genus were fast-moving nektonic carnivores. The type species of the genus is Ammonites caillaudianus. Circular to rectangular whorl…
Holcodiscidae Spitidiscus species